mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-24 07:47:20 +00:00
561 lines
14 KiB
PHP
561 lines
14 KiB
PHP
<?php
|
|
/**
|
|
* PHP configuration based AclInterface implementation
|
|
*
|
|
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
|
|
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
*
|
|
* Licensed under The MIT License
|
|
* For full copyright and license information, please see the LICENSE.txt
|
|
* Redistributions of files must retain the above copyright notice.
|
|
*
|
|
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
* @link http://cakephp.org CakePHP(tm) Project
|
|
* @package Cake.Controller.Component.Acl
|
|
* @since CakePHP(tm) v 2.1
|
|
* @license http://www.opensource.org/licenses/mit-license.php MIT License
|
|
*/
|
|
|
|
/**
|
|
* PhpAcl implements an access control system using a plain PHP configuration file.
|
|
* An example file can be found in app/Config/acl.php
|
|
*
|
|
* @package Cake.Controller.Component.Acl
|
|
*/
|
|
class PhpAcl extends Object implements AclInterface {
|
|
|
|
/**
|
|
* Constant for deny
|
|
*
|
|
* @var bool
|
|
*/
|
|
const DENY = false;
|
|
|
|
/**
|
|
* Constant for allow
|
|
*
|
|
* @var bool
|
|
*/
|
|
const ALLOW = true;
|
|
|
|
/**
|
|
* Options:
|
|
* - policy: determines behavior of the check method. Deny policy needs explicit allow rules, allow policy needs explicit deny rules
|
|
* - config: absolute path to config file that contains the acl rules (@see app/Config/acl.php)
|
|
*
|
|
* @var array
|
|
*/
|
|
public $options = array();
|
|
|
|
/**
|
|
* Aro Object
|
|
*
|
|
* @var PhpAro
|
|
*/
|
|
public $Aro = null;
|
|
|
|
/**
|
|
* Aco Object
|
|
*
|
|
* @var PhpAco
|
|
*/
|
|
public $Aco = null;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* Sets a few default settings up.
|
|
*/
|
|
public function __construct() {
|
|
$this->options = array(
|
|
'policy' => static::DENY,
|
|
'config' => APP . 'Config' . DS . 'acl.php',
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Initialize method
|
|
*
|
|
* @param AclComponent $Component Component instance
|
|
* @return void
|
|
*/
|
|
public function initialize(Component $Component) {
|
|
if (!empty($Component->settings['adapter'])) {
|
|
$this->options = $Component->settings['adapter'] + $this->options;
|
|
}
|
|
|
|
App::uses('PhpReader', 'Configure');
|
|
$Reader = new PhpReader(dirname($this->options['config']) . DS);
|
|
$config = $Reader->read(basename($this->options['config']));
|
|
$this->build($config);
|
|
$Component->Aco = $this->Aco;
|
|
$Component->Aro = $this->Aro;
|
|
}
|
|
|
|
/**
|
|
* build and setup internal ACL representation
|
|
*
|
|
* @param array $config configuration array, see docs
|
|
* @return void
|
|
* @throws AclException When required keys are missing.
|
|
*/
|
|
public function build(array $config) {
|
|
if (empty($config['roles'])) {
|
|
throw new AclException(__d('cake_dev', '"roles" section not found in configuration.'));
|
|
}
|
|
|
|
if (empty($config['rules']['allow']) && empty($config['rules']['deny'])) {
|
|
throw new AclException(__d('cake_dev', 'Neither "allow" nor "deny" rules were provided in configuration.'));
|
|
}
|
|
|
|
$rules['allow'] = !empty($config['rules']['allow']) ? $config['rules']['allow'] : array();
|
|
$rules['deny'] = !empty($config['rules']['deny']) ? $config['rules']['deny'] : array();
|
|
$roles = !empty($config['roles']) ? $config['roles'] : array();
|
|
$map = !empty($config['map']) ? $config['map'] : array();
|
|
$alias = !empty($config['alias']) ? $config['alias'] : array();
|
|
|
|
$this->Aro = new PhpAro($roles, $map, $alias);
|
|
$this->Aco = new PhpAco($rules);
|
|
}
|
|
|
|
/**
|
|
* No op method, allow cannot be done with PhpAcl
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return bool Success
|
|
*/
|
|
public function allow($aro, $aco, $action = "*") {
|
|
return $this->Aco->access($this->Aro->resolve($aro), $aco, $action, 'allow');
|
|
}
|
|
|
|
/**
|
|
* deny ARO access to ACO
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return bool Success
|
|
*/
|
|
public function deny($aro, $aco, $action = "*") {
|
|
return $this->Aco->access($this->Aro->resolve($aro), $aco, $action, 'deny');
|
|
}
|
|
|
|
/**
|
|
* No op method
|
|
*
|
|
* @param string $aro ARO The requesting object identifier.
|
|
* @param string $aco ACO The controlled object identifier.
|
|
* @param string $action Action (defaults to *)
|
|
* @return bool Success
|
|
*/
|
|
public function inherit($aro, $aco, $action = "*") {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Main ACL check function. Checks to see if the ARO (access request object) has access to the
|
|
* ACO (access control object).
|
|
*
|
|
* @param string $aro ARO
|
|
* @param string $aco ACO
|
|
* @param string $action Action
|
|
* @return bool true if access is granted, false otherwise
|
|
*/
|
|
public function check($aro, $aco, $action = "*") {
|
|
$allow = $this->options['policy'];
|
|
$prioritizedAros = $this->Aro->roles($aro);
|
|
|
|
if ($action && $action !== "*") {
|
|
$aco .= '/' . $action;
|
|
}
|
|
|
|
$path = $this->Aco->path($aco);
|
|
|
|
if (empty($path)) {
|
|
return $allow;
|
|
}
|
|
|
|
foreach ($path as $node) {
|
|
foreach ($prioritizedAros as $aros) {
|
|
if (!empty($node['allow'])) {
|
|
$allow = $allow || count(array_intersect($node['allow'], $aros));
|
|
}
|
|
|
|
if (!empty($node['deny'])) {
|
|
$allow = $allow && !count(array_intersect($node['deny'], $aros));
|
|
}
|
|
}
|
|
}
|
|
|
|
return $allow;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Access Control Object
|
|
*/
|
|
class PhpAco {
|
|
|
|
/**
|
|
* holds internal ACO representation
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_tree = array();
|
|
|
|
/**
|
|
* map modifiers for ACO paths to their respective PCRE pattern
|
|
*
|
|
* @var array
|
|
*/
|
|
public static $modifiers = array(
|
|
'*' => '.*',
|
|
);
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param array $rules Rules array
|
|
*/
|
|
public function __construct(array $rules = array()) {
|
|
foreach (array('allow', 'deny') as $type) {
|
|
if (empty($rules[$type])) {
|
|
$rules[$type] = array();
|
|
}
|
|
}
|
|
|
|
$this->build($rules['allow'], $rules['deny']);
|
|
}
|
|
|
|
/**
|
|
* return path to the requested ACO with allow and deny rules attached on each level
|
|
*
|
|
* @param string $aco ACO string
|
|
* @return array
|
|
*/
|
|
public function path($aco) {
|
|
$aco = $this->resolve($aco);
|
|
$path = array();
|
|
$level = 0;
|
|
$root = $this->_tree;
|
|
$stack = array(array($root, 0));
|
|
|
|
while (!empty($stack)) {
|
|
list($root, $level) = array_pop($stack);
|
|
|
|
if (empty($path[$level])) {
|
|
$path[$level] = array();
|
|
}
|
|
|
|
foreach ($root as $node => $elements) {
|
|
$pattern = '/^' . str_replace(array_keys(static::$modifiers), array_values(static::$modifiers), $node) . '$/';
|
|
|
|
if ($node == $aco[$level] || preg_match($pattern, $aco[$level])) {
|
|
// merge allow/denies with $path of current level
|
|
foreach (array('allow', 'deny') as $policy) {
|
|
if (!empty($elements[$policy])) {
|
|
if (empty($path[$level][$policy])) {
|
|
$path[$level][$policy] = array();
|
|
}
|
|
$path[$level][$policy] = array_merge($path[$level][$policy], $elements[$policy]);
|
|
}
|
|
}
|
|
|
|
// traverse
|
|
if (!empty($elements['children']) && isset($aco[$level + 1])) {
|
|
array_push($stack, array($elements['children'], $level + 1));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* allow/deny ARO access to ARO
|
|
*
|
|
* @param string $aro ARO string
|
|
* @param string $aco ACO string
|
|
* @param string $action Action string
|
|
* @param string $type access type
|
|
* @return void
|
|
*/
|
|
public function access($aro, $aco, $action, $type = 'deny') {
|
|
$aco = $this->resolve($aco);
|
|
$depth = count($aco);
|
|
$root = $this->_tree;
|
|
$tree = &$root;
|
|
|
|
foreach ($aco as $i => $node) {
|
|
if (!isset($tree[$node])) {
|
|
$tree[$node] = array(
|
|
'children' => array(),
|
|
);
|
|
}
|
|
|
|
if ($i < $depth - 1) {
|
|
$tree = &$tree[$node]['children'];
|
|
} else {
|
|
if (empty($tree[$node][$type])) {
|
|
$tree[$node][$type] = array();
|
|
}
|
|
|
|
$tree[$node][$type] = array_merge(is_array($aro) ? $aro : array($aro), $tree[$node][$type]);
|
|
}
|
|
}
|
|
|
|
$this->_tree = &$root;
|
|
}
|
|
|
|
/**
|
|
* resolve given ACO string to a path
|
|
*
|
|
* @param string $aco ACO string
|
|
* @return array path
|
|
*/
|
|
public function resolve($aco) {
|
|
if (is_array($aco)) {
|
|
return array_map('strtolower', $aco);
|
|
}
|
|
|
|
// strip multiple occurrences of '/'
|
|
$aco = preg_replace('#/+#', '/', $aco);
|
|
// make case insensitive
|
|
$aco = ltrim(strtolower($aco), '/');
|
|
return array_filter(array_map('trim', explode('/', $aco)));
|
|
}
|
|
|
|
/**
|
|
* build a tree representation from the given allow/deny informations for ACO paths
|
|
*
|
|
* @param array $allow ACO allow rules
|
|
* @param array $deny ACO deny rules
|
|
* @return void
|
|
*/
|
|
public function build(array $allow, array $deny = array()) {
|
|
$this->_tree = array();
|
|
|
|
foreach ($allow as $dotPath => $aros) {
|
|
if (is_string($aros)) {
|
|
$aros = array_map('trim', explode(',', $aros));
|
|
}
|
|
|
|
$this->access($aros, $dotPath, null, 'allow');
|
|
}
|
|
|
|
foreach ($deny as $dotPath => $aros) {
|
|
if (is_string($aros)) {
|
|
$aros = array_map('trim', explode(',', $aros));
|
|
}
|
|
|
|
$this->access($aros, $dotPath, null, 'deny');
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Access Request Object
|
|
*/
|
|
class PhpAro {
|
|
|
|
/**
|
|
* role to resolve to when a provided ARO is not listed in
|
|
* the internal tree
|
|
*
|
|
* @var string
|
|
*/
|
|
const DEFAULT_ROLE = 'Role/default';
|
|
|
|
/**
|
|
* map external identifiers. E.g. if
|
|
*
|
|
* array('User' => array('username' => 'jeff', 'role' => 'editor'))
|
|
*
|
|
* is passed as an ARO to one of the methods of AclComponent, PhpAcl
|
|
* will check if it can be resolved to an User or a Role defined in the
|
|
* configuration file.
|
|
*
|
|
* @var array
|
|
* @see app/Config/acl.php
|
|
*/
|
|
public $map = array(
|
|
'User' => 'User/username',
|
|
'Role' => 'User/role',
|
|
);
|
|
|
|
/**
|
|
* aliases to map
|
|
*
|
|
* @var array
|
|
*/
|
|
public $aliases = array();
|
|
|
|
/**
|
|
* internal ARO representation
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_tree = array();
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param array $aro The aro data
|
|
* @param array $map The identifier mappings
|
|
* @param array $aliases The aliases to map.
|
|
*/
|
|
public function __construct(array $aro = array(), array $map = array(), array $aliases = array()) {
|
|
if (!empty($map)) {
|
|
$this->map = $map;
|
|
}
|
|
|
|
$this->aliases = $aliases;
|
|
$this->build($aro);
|
|
}
|
|
|
|
/**
|
|
* From the perspective of the given ARO, walk down the tree and
|
|
* collect all inherited AROs levelwise such that AROs from different
|
|
* branches with equal distance to the requested ARO will be collected at the same
|
|
* index. The resulting array will contain a prioritized list of (list of) roles ordered from
|
|
* the most distant AROs to the requested one itself.
|
|
*
|
|
* @param string|array $aro An ARO identifier
|
|
* @return array prioritized AROs
|
|
*/
|
|
public function roles($aro) {
|
|
$aros = array();
|
|
$aro = $this->resolve($aro);
|
|
$stack = array(array($aro, 0));
|
|
|
|
while (!empty($stack)) {
|
|
list($element, $depth) = array_pop($stack);
|
|
$aros[$depth][] = $element;
|
|
|
|
foreach ($this->_tree as $node => $children) {
|
|
if (in_array($element, $children)) {
|
|
array_push($stack, array($node, $depth + 1));
|
|
}
|
|
}
|
|
}
|
|
|
|
return array_reverse($aros);
|
|
}
|
|
|
|
/**
|
|
* resolve an ARO identifier to an internal ARO string using
|
|
* the internal mapping information.
|
|
*
|
|
* @param string|array $aro ARO identifier (User.jeff, array('User' => ...), etc)
|
|
* @return string internal aro string (e.g. User/jeff, Role/default)
|
|
*/
|
|
public function resolve($aro) {
|
|
foreach ($this->map as $aroGroup => $map) {
|
|
list ($model, $field) = explode('/', $map, 2);
|
|
$mapped = '';
|
|
|
|
if (is_array($aro)) {
|
|
if (isset($aro['model']) && isset($aro['foreign_key']) && $aro['model'] === $aroGroup) {
|
|
$mapped = $aroGroup . '/' . $aro['foreign_key'];
|
|
} elseif (isset($aro[$model][$field])) {
|
|
$mapped = $aroGroup . '/' . $aro[$model][$field];
|
|
} elseif (isset($aro[$field])) {
|
|
$mapped = $aroGroup . '/' . $aro[$field];
|
|
}
|
|
} elseif (is_string($aro)) {
|
|
$aro = ltrim($aro, '/');
|
|
|
|
if (strpos($aro, '/') === false) {
|
|
$mapped = $aroGroup . '/' . $aro;
|
|
} else {
|
|
list($aroModel, $aroValue) = explode('/', $aro, 2);
|
|
|
|
$aroModel = Inflector::camelize($aroModel);
|
|
|
|
if ($aroModel === $model || $aroModel === $aroGroup) {
|
|
$mapped = $aroGroup . '/' . $aroValue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($this->_tree[$mapped])) {
|
|
return $mapped;
|
|
}
|
|
|
|
// is there a matching alias defined (e.g. Role/1 => Role/admin)?
|
|
if (!empty($this->aliases[$mapped])) {
|
|
return $this->aliases[$mapped];
|
|
}
|
|
}
|
|
return static::DEFAULT_ROLE;
|
|
}
|
|
|
|
/**
|
|
* adds a new ARO to the tree
|
|
*
|
|
* @param array $aro one or more ARO records
|
|
* @return void
|
|
*/
|
|
public function addRole(array $aro) {
|
|
foreach ($aro as $role => $inheritedRoles) {
|
|
if (!isset($this->_tree[$role])) {
|
|
$this->_tree[$role] = array();
|
|
}
|
|
|
|
if (!empty($inheritedRoles)) {
|
|
if (is_string($inheritedRoles)) {
|
|
$inheritedRoles = array_map('trim', explode(',', $inheritedRoles));
|
|
}
|
|
|
|
foreach ($inheritedRoles as $dependency) {
|
|
// detect cycles
|
|
$roles = $this->roles($dependency);
|
|
|
|
if (in_array($role, Hash::flatten($roles))) {
|
|
$path = '';
|
|
|
|
foreach ($roles as $roleDependencies) {
|
|
$path .= implode('|', (array)$roleDependencies) . ' -> ';
|
|
}
|
|
|
|
trigger_error(__d('cake_dev', 'cycle detected when inheriting %s from %s. Path: %s', $role, $dependency, $path . $role));
|
|
continue;
|
|
}
|
|
|
|
if (!isset($this->_tree[$dependency])) {
|
|
$this->_tree[$dependency] = array();
|
|
}
|
|
|
|
$this->_tree[$dependency][] = $role;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* adds one or more aliases to the internal map. Overwrites existing entries.
|
|
*
|
|
* @param array $alias alias from => to (e.g. Role/13 -> Role/editor)
|
|
* @return void
|
|
*/
|
|
public function addAlias(array $alias) {
|
|
$this->aliases = $alias + $this->aliases;
|
|
}
|
|
|
|
/**
|
|
* build an ARO tree structure for internal processing
|
|
*
|
|
* @param array $aros array of AROs as key and their inherited AROs as values
|
|
* @return void
|
|
*/
|
|
public function build(array $aros) {
|
|
$this->_tree = array();
|
|
$this->addRole($aros);
|
|
}
|
|
|
|
}
|